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502be2a32f
linux_dsm_epyc7002/fs/gfs2
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Bob Peterson 502be2a32f GFS2: Fix slab memory leak in gfs2_bufdata 
This patch fixes a slab memory leak that sometimes can occur
for files with a very short lifespan. The problem occurs when
a dinode is deleted before it has gotten to the journal properly.
In the leak scenario, the bd object is pinned for journal
committment (queued to the metadata buffers queue: sd_log_le_buf)
but is subsequently unpinned and dequeued before it finds its way
to the ail or the revoke queue. In this rare circumstance, the bd
object needs to be freed from slab memory, or it is forgotten.
We have to be very careful how we do it, though, because
multiple processes can call gfs2_remove_from_journal. In order to
avoid double-frees, only the process that does the unpinning is
allowed to free the bd.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2013-12-13 21:42:40 +00:00
..
acl.c gfs2: Use uid_eq and gid_eq where appropriate 2013-02-13 06:15:10 -08:00
acl.h fs: take the ACL checks to common code 2011-07-25 14:30:23 -04:00
aops.c GFS2: Add allocation parameters structure 2013-10-02 11:13:25 +01:00
bmap.c GFS2: Add allocation parameters structure 2013-10-02 11:13:25 +01:00
bmap.h GFS2: New truncate sequence 2010-09-20 11:18:16 +01:00
dentry.c gfs2: use check_submounts_and_drop() 2013-09-05 16:23:51 -04:00
dir.c treewide: Add __GFP_NOWARN to k.alloc calls with v.alloc fallbacks 2013-08-20 13:06:40 +02:00
dir.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw 2013-07-02 09:41:18 -07:00
export.c [readdir] constify ->actor 2013-06-29 12:57:05 +04:00
file.c GFS2: Add allocation parameters structure 2013-10-02 11:13:25 +01:00
gfs2.h [GFS2] Remove remote lock dropping code 2008-06-27 09:39:44 +01:00
glock.c GFS2: fix potential NULL pointer dereference 2013-11-21 09:55:45 +00:00
glock.h GFS2: Use lockref for glocks 2013-10-15 15:18:08 +01:00
glops.c GFS2: Use lockref for glocks 2013-10-15 15:18:08 +01:00
glops.h GFS2: Fix AIL flush issue during fsync 2011-10-21 12:39:41 +01:00
incore.h GFS2: Use generic list_lru for quota 2013-11-04 11:17:49 +00:00
inode.c GFS2: Fix ref count bug relating to atomic_open 2013-11-21 18:47:57 +00:00
inode.h GFS2: Add atomic_open support 2013-06-14 11:17:15 +01:00
Kconfig Finally eradicate CONFIG_HOTPLUG 2013-06-03 14:20:18 -07:00
lock_dlm.c gfs2: endianness misannotations 2013-11-15 22:04:16 -05:00
log.c GFS2: Fix use-after-free race when calling gfs2_remove_from_ail 2013-12-13 21:42:23 +00:00
log.h GFS2: aggressively issue revokes in gfs2_log_flush 2013-06-19 09:41:59 +01:00
lops.c GFS2: Move gfs2_sync_meta to lops.c 2013-08-19 17:26:32 +01:00
lops.h GFS2: Eliminate gfs2_rg_lops 2013-06-05 09:50:40 +01:00
main.c GFS2: Use generic list_lru for quota 2013-11-04 11:17:49 +00:00
Makefile GFS2: Rename ops_inode.c to inode.c 2011-05-10 13:12:49 +01:00
meta_io.c GFS2: Fix slab memory leak in gfs2_bufdata 2013-12-13 21:42:40 +00:00
meta_io.h GFS2: Move gfs2_sync_meta to lops.c 2013-08-19 17:26:32 +01:00
ops_fstype.c GFS2: don't hold s_umount over blkdev_put 2013-12-13 21:42:03 +00:00
quota.c gfs2: endianness misannotations 2013-11-15 22:04:16 -05:00
quota.h GFS2: Use generic list_lru for quota 2013-11-04 11:17:49 +00:00
recovery.c GFS2: fail mount if journal recovery fails 2012-01-11 09:24:48 +00:00
recovery.h gfs2: use workqueue instead of slow-work 2010-07-23 13:14:25 +02:00
rgrp.c gfs2: endianness misannotations 2013-11-15 22:04:16 -05:00
rgrp.h GFS2: Add allocation parameters structure 2013-10-02 11:13:25 +01:00
super.c GFS2: Clean up reservation removal 2013-09-27 12:49:33 +01:00
super.h GFS2: Clean up freeze code 2013-01-29 10:29:05 +00:00
sys.c GFS2: Remove obsolete quota tunable 2013-10-04 09:49:29 +01:00
sys.h GFS2: dlm based recovery coordination 2012-01-11 09:23:05 +00:00
trace_gfs2.h GFS2: Add origin indicator to glock demote tracing 2013-04-10 10:32:05 +01:00
trans.c GFS2: fix warning message 2013-06-19 21:29:19 +01:00
trans.h GFS2: Split gfs2_trans_add_bh() into two 2013-01-29 10:28:04 +00:00
util.c GFS2: Move gfs2_icbit_munge into quota.c 2013-10-02 14:47:02 +01:00
util.h GFS2: Move gfs2_icbit_munge into quota.c 2013-10-02 14:47:02 +01:00
xattr.c GFS2: Add allocation parameters structure 2013-10-02 11:13:25 +01:00
xattr.h sanitize xattr handler prototypes 2009-12-16 12:16:49 -05:00